Denial of service happens when the size of the video is zero bytes and this is opens with the Media Player Classic. This it is due to than the player don't verify the size of the file before being to read header.
[+] Media Player Classic <= 6.4.9.1
[*] Exception caught at 0064023b div ecx
[*] EAX:00000000 EBX:00000000 ECX:00000000 EDX:00000000
[*] ESI:00e75230 EDI:00000000 ESP:0134f150 EBP:00000000
The bug can't be maliciously exploited but it is well know it.
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